Why am I not losing?!

you need to open the diary if you want constructive criticism. also you need to weigh everything that is not a liquid that passes you lips (you can measure most liquids with accuracy) it's the only thing that will tell you the accurate caloric intake. last as pointed out the calories burned are easily overstated so either eat back half of them or measure them more accurately with a HRM like a Fitbit

As for the EAt more your bady is going into Starvation mode hanging on to every calorie that's utter BS starvation mode is a myth
http://www.aworkoutroutine.com/starvation-mode/

Thank you! Yes, there is a starvation mode. It happens when the body is deprived of just about all caloric intake over a period of time that is much longer than say 3-4 hours between meals. Will your metabolism slow slightly when you eat low calories over an extended period of time, yes absolutely. But nowhere near the actual "starvation mode". Will you have full energy if you don't eat enough calories? No. Will you get hungry? Yes. Will it sabotage your weight loss journey? No.

1200 is REALLY low for someone of 220lb even without going to the gym. If you are working out on top of that and not eating back those calories, or at least half (to compensate for over zealous burn counting), you can very well plateau since your body is craving more nutrients so as not to consume your muscles. Search 1200- you will see the list of evils that comes back associated with this magical number that lord knows where it came from or whom decided it was the end all be all goal of weight loss. You probably need to eat more - very counter intuitive to what you have been taught or absorbed.

This x 1000. You're eating way too little. Check out this calculator: http://scoobysworkshop.com/calorie-calculator/ I entered your height, weight, age, and activity level, and it told me your BMR is 1808 and your daily calories should be either 1989 or 2242, depending on how active you are. Eating below your BMR isn't healthy. Your BMR is the number of calories your body would burn in a day even if you were in a coma or asleep for the whole day. Give yourself the fuel you need for your workouts and help your body function at its best!

Eating below your BMR is perfectly fine. MFP suggests that I eat 500 calories below my BMR.

eating 500 below TDEE is great, may have to around or slightly below BMR, but eating 500 cal below BMR unless you have 100+ lbs to lose would be far to aggressive of weight loss.

The extra 280 calories a day can make a huge difference in the amount of nutrition you take in and how you feel about your eating plan. The goal should be to eat as many calories as you can and still lose weight, not to eat as few calories as physically possible. For significant, long-term weight loss, you're going to have to find a plan you can live with and thrive on for years. A lot of people try to go as aggressively low with their calories as they can stand in the beginning, but I can't imagine living on 1200 for a year or more without breaking.

The other thing to remember is that the number on the scale is just one data point. You should also be measuring and taking pictures, because some weeks you'll lose inches but not pounds, and vice versa. Three weeks isn't a long time at all, so give it some more time.

(Disclaimer: this is all contingent on accurate tracking! I know you've said you're confident in your tracking, but the most likely explanation is that you're underestimating your intake or overestimating your burn.)

I guess there is also the chance that I'm just being impatient and not giving my body time to adjust.

2 pages, and mostly arguing about the existence of 'starvation mode'

Here's the first place to start

http://www.myfitnesspal.com/topics/show/1080242-a-guide-to-get-you-started-on-your-path-to-sexypants?hl=sexypants

And I'll throw my ( worthless Canadian ) 2 cents in, and say.... It's been 3 weeks. If you've made a crapload of changes, give it a bit more time, before you make any more moves.

you've been hording pennies, i have to throw in nickles now

I would NOT recommend a Timex HRM for tracking calories. They are notoriously high when it comes to calorie burns, like 30-40% too high. Polar has a better reputation where accuracy is concerned.

Craigslist and Ebay are great places to start to source out a second hand cheap one.